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Reinforcement for glulam beam, with steel reinforcement and wood grade I and grade II reinforcement.
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![Figure 5 Linear elastic, elastoplastic model, Hernandez, et al. [12]](publication/304707728/figure/fig3/AS:997067719716864@1614730877635/Linear-elastic-elastoplastic-model-Hernandez-et-al-12_Q320.jpg)
Wood is a natural resource that is renewable and available in various species in tropical countries. Its abundancy in nature makes it easy to obtain, thus making it a nature friendly material for use in construction. Indonesia is the most important source of tropical wood in the world after Brazil, making the use of wood for structural elements ver...
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... Second, different density between face, core and back layers of board (Subiyanto et al., 2008). Coating surface with materials with higher density could potentially improve board's MOE value (Biblis;Grigoriou and Carino, 1996;Sugiri et al., 2016). However, if the surface layer had lower MOE value than that of OSB, the effect was likely to be the opposite. ...
This research presents an improvement of the physical and mechanical properties of composite board (com-ply) made of Oriented Strand Board (OSB) coated with wood veneer of Pine (Pinus merkusii), Avocado (Persea Americana) and Mahogany (Swietenia mahogany). 1.5 mm thick veneers of those three wood types were adhered to the surface of OSB using two adhesive types: epoxy and isocyanate. The adhesive with the glue spread of 250 g m ⁻² applied using single glue line was spread and then cold pressed with the pressure of 15 kg cm ⁻² for 3 hours. The research result showed an improving dimension stability of com-ply, but not found on all parameters of physical property test. The moisture content seemed to be influenced by the com-ply type, yet not related to its thickness swelling, water absorption and linear expansion. The exception took place in the parallel linear expansion when immersed for 2 hours. The highest to the lowest increases of MOE and MOR were consecutively found on OSB coated with wood veneer of Pine, Mahogany and Avocado. However, the increases were statistically insignificant. The highest increasing screw hold power was found at the com-ply type AE (avocado veneer and epoxy adhesive) that was by 28%. © 2019, Korean Society of Wood Science Technology. All rights reserved.
Fungsi pondasi adalah untuk mentransfer atau meneruskan beban dari struktur diatasnya.
Beban struktur atas tersebut harus ditransfer kelapisan tanah yang cukup keras agar pondasi mampu memikul beban tersebut contoh kasusnya pondasi grup tiang. Jika pondasi grup tiang digunakan untuk mendukung suatu struktur bangunan tinggi, tujuan dari penelitian ini adalah menganalisa bagaimana perilaku pile group di dalam sistem tanah berlapis, menganalisa pengaruh jumlah tiang dalam satu grup akibat beban lateral, menganalisa pengaruh jumlah tiang dalam satu grup terhadap defleksi perkedalaman, dan menganalisa pengaruh jumlah tiang dalam satu grup terhadap bending momen perkedalaman. Data input yang digunakan berdasarkan data lapangan hasil uji SPT dan analisa dilakukan dengan variasi lapisan tanah permukaan tanah (pasir dan lanau) dan permodelan dengan software PGroup v.8.0. Hasil analisa yang diamati berupa nilai tahanan lateral tanah dan defleksi lateral kepala tiang. Dari kurva p-y yang dihasilkan, pada kedalaman 2 m dan 6 m merupakan kurva yang menggambarkan tiang berperilaku liat (ductile) sedangkan pada kedalaman 10 m dan 14 m merupakan kurva yang menggambarkan tiang berperilaku getas (brittle). Sehingga dapat dilihat bahwa, perilaku liat dapat terjadi pada tanah pasir akibat beban statis dan perilaku getas terdapat pada tanah-tanah lempung khususnya lmpung kaku. Pengaruh jumlah tiang dalam satu grup terhadap defleksi dengan kombinasi beban yang sama adalah inear dimana semakin banyak jumlah tiang dalam satu grup maka defleksi akan semakin kecil.
